French Open glance: Men's and women's second seeds in action

The men's and women's second-seeded players are in fourth-round action at the French Open.

No. 2 Alexander Zverev of Germany faces big-hitting Russian Karen Khachanov, a familiar face from back in their junior days.

"We know each other pretty well," the 21-year-old Zverev said. "Also we are good outside the court, with his parents, they know me and I know them well."

Zverev beat the 22-year-old Khachanov in their only previous meeting, two years ago on hard courts in the Russian city of Saint Petersburg.

Both are looking to reach the quarterfinals of a major for the first time, and they will be first up on Court Suzanne Lenglen.

No. 2 Caroline Wozniacki is bidding for her second straight Grand Slam title after winning the Australian Open, the first major of her career.

But the Danish player faces a tricky match later on Lenglen against 14th-seeded Russian Daria Kasatkina, who has beaten her twice this year.

Also, in men's fourth-round matches, 2016 French Open champion Novak Djokovic takes on Spanish veteran Fernando Verdasco for the 15th time overall. Djokovic leads 10-4, including the past five encounters.

No. 7 Dominic Thiem of Austria — a semifinalist at Roland Garros the past two years — faces No. 19 Kei Nishikori of Japan. Nishikori leads him 2-0 in head-to-heads.

2007 — The last time there were no men from France in the fourth round at Roland Garros.

QUOTE OF THE DAY

"We are both on a comeback for two totally different reasons, and she's been on her journey for over a year and I just started mine a couple months ago." — Williams, looking ahead to her fourth-round clash against long-time rival Sharapova.